web-app-openproject: migrate from OpenProject 13 to 14

- updated base image from openproject/community:13 to openproject/openproject:14
- added dedicated migration task (db:migrate + schema cache clear)
- moved settings, ldap, and admin tasks to separate files
- adjusted docker-compose template to use OPENPROJECT_WEB_SERVICE / OPENPROJECT_SEEDER_SERVICE variables
- replaced postinstall.sh with precompile-assets.sh
- ensured depends_on uses variable-based service names

Ref: https://chatgpt.com/share/68d57770-2430-800f-ae53-e7eda6993a8d

roles/web-app-openproject/tasks/01_migration.yml

@@ -0,0 +1,16 @@
+- name: Run DB migrations (OpenProject)
+  shell: >
+    docker compose run --rm {{ OPENPROJECT_SEEDER_SERVICE }} bash -lc
+    "cd /app && RAILS_ENV={{ ENVIRONMENT | lower }} bin/rails db:migrate"
+  args:
+    chdir: "{{ docker_compose.directories.instance }}"
+  register: openproject_migrate
+  changed_when: openproject_migrate.rc == 0
+  failed_when: openproject_migrate.rc != 0
+
+- name: Clear schema cache
+  shell: >
+    docker compose run --rm {{ OPENPROJECT_SEEDER_SERVICE }} bash -lc
+    "cd /app && RAILS_ENV={{ ENVIRONMENT | lower }} bin/rails db:schema:cache:clear"
+  args:
+    chdir: "{{ docker_compose.directories.instance }}"